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Refractive Error in Chinese Preschool Children: The Shanghai Study
Tao Li1, Xiaodong Zhou, Xuefeng Chen
1Department of Ophthalmology (T.L., X.Z.), Fudan University Jinshan Hospital, Shanghai, China; and Jinshan District Eye Disease Prevention and Treatment Center (X.Z., X.C., H.Q., Q.G.), Shanghai, China.
Eye & Contact Lens
|September 28, 2018
Summary
This study found a high prevalence of refractive errors in Chinese preschoolers, with myopia, hyperopia, and astigmatism affecting over 19% of children. Factors like being female and body composition were linked to myopia development.
Area of Science:
- Ophthalmology
- Pediatric Optometry
- Public Health
Background:
- Refractive errors are a significant global health concern, particularly in children.
- Early detection and intervention are crucial for preventing long-term vision impairment.
Purpose of the Study:
- To determine the prevalence of refractive errors (myopia, hyperopia, astigmatism) in Chinese preschool children.
- To identify associated factors influencing refractive error development in this age group.
Main Methods:
- A school-based survey of 7,166 children aged 4-6 years in Shanghai.
- Refractive error assessed via noncycloplegic autorefraction.
- Axial length, body height, and weight were also recorded.
Main Results:
- Overall prevalence: myopia 5.9%, hyperopia 1.0%, astigmatism 12.7%.
- Spherical equivalent median: +0.25 D.
- Myopic spherical equivalent associated with female sex, longer axial length, taller, and lighter children.
Conclusions:
- Shanghai exhibits a high prevalence of refractive errors among preschool children.
- Further longitudinal studies are essential to track refractive changes and inform myopia prevention strategies.
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